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- /*
- * Copyright (c) 2021, Andreas Kling <kling@serenityos.org>
- *
- * SPDX-License-Identifier: BSD-2-Clause
- */
- #include <LibJS/AST.h>
- #include <LibJS/Bytecode/BasicBlock.h>
- #include <LibJS/Bytecode/Generator.h>
- #include <LibJS/Bytecode/Instruction.h>
- #include <LibJS/Bytecode/Register.h>
- #include <LibJS/Forward.h>
- namespace JS::Bytecode {
- Generator::Generator()
- : m_string_table(make<StringTable>())
- {
- }
- Generator::~Generator()
- {
- }
- Executable Generator::generate(ASTNode const& node)
- {
- Generator generator;
- generator.switch_to_basic_block(generator.make_block());
- node.generate_bytecode(generator);
- return { move(generator.m_root_basic_blocks), move(generator.m_string_table), generator.m_next_register };
- }
- void Generator::grow(size_t additional_size)
- {
- VERIFY(m_current_basic_block);
- m_current_basic_block->grow(additional_size);
- }
- void* Generator::next_slot()
- {
- VERIFY(m_current_basic_block);
- return m_current_basic_block->next_slot();
- }
- Register Generator::allocate_register()
- {
- VERIFY(m_next_register != NumericLimits<u32>::max());
- return Register { m_next_register++ };
- }
- Label Generator::nearest_continuable_scope() const
- {
- return m_continuable_scopes.last();
- }
- void Generator::begin_continuable_scope(Label continue_target)
- {
- m_continuable_scopes.append(continue_target);
- }
- void Generator::end_continuable_scope()
- {
- m_continuable_scopes.take_last();
- }
- }
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